Janesville Weather Forecast

    • 26
    • 49

    Mostly Sunny

    • 23
    • 48

    Mostly Sunny

    • 25
    • 47

    Partly Sunny

    • 31
    • 50

    Partly Sunny

    • 30
    • 54

    Mostly Sunny

    • 30
    • 51

    Mostly Sunny

    • 30
    • 50

    Partly Sunny

Today 18 Jan Lassen-Eastern Plumas-Eastern Sierra Counties

Partly cloudy. Highs 48 to 58. Light Winds.

Tonight 18 Jan Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 19 to 29. Light Winds.

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Janesville Temperature Statistics

January Temperature

Reno/Stead (55.3 miles)

  • Lowest 9 January, 2026

    6.8 °F

  • Average January

    32.9 °F

  • Highest 3 January, 2026

    50 °F

Climate (2021–Present)

Reno/Stead (55.3 miles)

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  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    64.3 °F
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